The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
An open-circuit fault detection and diagnosis strategy for a direct matrix converter is proposed in this paper. The current recirculating path during an open circuit condition is considered in detail with the aim of contributing more expert knowledge to the fault detection system for matrix converter. Simulation results are presented demonstrate the open circuit fault behavior of matrix converter...
This paper deals with induction machines bearing failures detection and diagnosis using vibration and temperature signals. It proposes the use of a new Classical Mechanics-inspired Optimization (CMO) metaheuristic for data clustering. To ensure failure detection, transitions from a state to another is analyzed in order to form a transitional model between system states generated by the clustering...
Transformers damage happened in Transmisi Jawa Bagian Tengah from 2008 until 2015 as much as 54 times. Active part damage, especially in winding, are the most major cases happened as much as 34 from 54 damage (63%), it was almost caused by Through Fault Current in seconday side of transformer (feeder). Diagnosis concept applied in PLN Transmisi Jawa Bagian Tengah considered into three (3) level assessment,...
Nearly 20 million premature and Low Birth Weight infants are born each year in developing countries, 4 million die within their first month. These deaths occur due to the unavailability or unreliability of traditional incubators. Moreover, although Telemedicine is helpful in rural areas, the shortage of healthcare providers have made it inaccessible in both basic healthcare. Thereby, traditional preterm...
The main purpose of this paper is to develop a system for the early diagnosis and detection of abnormalities of any patient during gait cycle. A malfunction in the gait cycle leads to pain, and undesirable effects on the bones of the legs due to large forces exerted on specific areas. The gait cycle is divided into two main phases, the stance that is characterized as the contact of the right leg with...
The general structure of the electric traction system highlights the complexity and diversity of electrical equipment from the power supply. The return circuit, part of electric traction railway, consists of the running rails, the joint coils and the return feeder to the traction substation. Monitoring of the electrical equipment, existent in the electric traction railway, is a newest concept. The...
This report discusses the implementation of a computerized algorithm specifically designed to measure the syllables-per-minute rate of abnormal speech typically produced by persons suffering from an articulatory disorder known as dysarthria. This speech rate measurement application — which can also serve as a diagnostic tool in itself — has been integrated into the computerised Frenchay Dysarthria...
This note is a contribution to the problem of leakage detection in irrigation networks. The main goal is to reduce the lost water due to the leakages. This lost water represents a source of useless electrical energy spending. The problem is tackled by using water volume-balance method. The considered case study concerns the irrigation network of Carpentras, situated in south of France (see Fig. 1).
This work presents a modern method for the diagnosis of railroad level crossing automatic signalling installations. The method proposed here is based on diagnosis diagrams designed by the authors. The diagrams cover all failure types that can occur for these types of installations. The diagrams were, then, used to create a diagnosis software package, which can rapidly and securely determine the failure...
Electric power supply installations must ensure a permanent power feed to the train traffic security installations. Any damage to the power feed components lead to delays in train traffic. This work proposed a modern computer-based diagnosis method based on diagnosis charts, both created by the authors. Running the hereby proposed software package and following its indications, the failure cause can...
Attention-deficit/hyperactivity disorder (ADHD) is one of the most prevalent neurobehavioral disorders in children and electroencephalography (EEG) is one of most common used neuroimaging techniques as the most accessible and informative method. EEG can be of great help in ADHD studies. Considering the brain as the most complicated information processing system, information theories can be applied...
This paper introduces test solutions for Integrated Fan Out Wafer Level Chip Scale Packaging (InFO WLCSP) which has the promising of being a very cost effective solution to achieve “More than Moore's law” for mobile devices — more so than 3D integrated circuits (3DIC). InFO WLCSP has its own unique test challenges and it is important to have high-quality screen methodology for severe defects and potential...
The paper presents the results of an analysis of the inter-turn fault effects on the voltage and current waveform of the capacitor discharge through transformer winding. The research was done within the FAIR project for which a measuring and diagnostic system for testing the condition of electrical circuits of superconducting electromagnets system is being developed. Appropriate measurements and simulations...
In this paper, voltage and current waveforms were measured in order to analysis arc characteristics of low voltage wires used for indoor wiring of railway station. The simulated arc generator was made by UL 1699 and arc was simulated to series arc. And analyzed statistical distributions of the current and voltage waveforms for the source was used to analysis series arc source. Results of analysis...
The diagnosis of electric machines, such as induction motors, is one of the key tasks that needs to be performed to guarantee their right operation as electromechanical energy converters in most industrial facilities. The ability to reliably identify a mechanical fault occurrence in an induction motor, before it became catastrophic, can reduce risks related to the productive chain. Recently, different...
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a...
This paper presents an inter-turn short circuit detection through the measurement of external magnetic field of induction motor. The technique of analysis is based on discrete wavelet transform energy in transient state where the machine operates at start-up and standstill states. The wavelet offers a very fine analysis of the unidimensional and two-dimensional signals. Through multilevel discrete...
Artificial intelligence is a new subject which has been applied in many fields. In recent years, many countries have been promoting quality education, and promotion of the culture of all the students and the overall quality of research and solve problems of practical ability, and multifaceted Intelligent students also advocated the development of a variety of intelligence, and that the goal of quality...
Based on the correlation theory, the fault diagnosis reasoning method, which is established upon the assumption that system has two states: health and fault, can obtain diagnostic reasoning model and realize fault diagnosis.is, In addition to health or fault state, there is a clear intermediate state in many electronic products, namely sub-health state. This state is neither a health state nor a fault...
Complex mechatronic systems are becoming more widespread such as in industrial machinery and robotic systems. Detecting faults in such systems proves to be a challenging task due to the multitude of components that are interacting. In this paper, we demonstrate how we use an unsupervised learning technique to detect accelerated wear patterns in complex systems, where wear interactions between components...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.